001
014
015 package com.liferay.portal.spring.bean;
016
017 import com.liferay.portal.cluster.ClusterableAdvice;
018 import com.liferay.portal.kernel.bean.BeanLocatorException;
019 import com.liferay.portal.kernel.bean.BeanReference;
020 import com.liferay.portal.kernel.bean.IdentifiableBean;
021 import com.liferay.portal.kernel.bean.PortalBeanLocatorUtil;
022 import com.liferay.portal.kernel.log.Log;
023 import com.liferay.portal.kernel.log.LogFactoryUtil;
024 import com.liferay.portal.security.lang.PortalSecurityManagerThreadLocal;
025
026 import java.io.PrintWriter;
027 import java.io.StringWriter;
028
029 import java.lang.reflect.Field;
030
031 import java.util.HashMap;
032 import java.util.Map;
033
034 import org.springframework.beans.BeansException;
035 import org.springframework.beans.factory.BeanCreationException;
036 import org.springframework.beans.factory.BeanFactory;
037 import org.springframework.beans.factory.BeanFactoryAware;
038 import org.springframework.beans.factory.NoSuchBeanDefinitionException;
039 import org.springframework.beans.factory.config.BeanPostProcessor;
040 import org.springframework.util.ReflectionUtils;
041
042
046 public class BeanReferenceAnnotationBeanPostProcessor
047 implements BeanFactoryAware, BeanPostProcessor {
048
049 public BeanReferenceAnnotationBeanPostProcessor() {
050 if (_log.isDebugEnabled()) {
051 _log.debug("Creating instance " + this.hashCode());
052 }
053 }
054
055 public void destroy() {
056 _beans.clear();
057 }
058
059 public Object postProcessAfterInitialization(Object bean, String beanName)
060 throws BeansException {
061
062 return bean;
063 }
064
065 public Object postProcessBeforeInitialization(Object bean, String beanName)
066 throws BeansException {
067
068 if (bean instanceof IdentifiableBean) {
069 IdentifiableBean identifiableBean = (IdentifiableBean)bean;
070
071 identifiableBean.setBeanIdentifier(beanName);
072 }
073 else if (beanName.endsWith("Service")) {
074 if (_log.isWarnEnabled()) {
075 _log.warn(
076 beanName + " should implement " +
077 IdentifiableBean.class.getName() +
078 " for " + ClusterableAdvice.class.getName());
079 }
080 }
081
082 boolean enabled = PortalSecurityManagerThreadLocal.isEnabled();
083
084 try {
085 PortalSecurityManagerThreadLocal.setEnabled(false);
086
087 _autoInject(bean, beanName, bean.getClass());
088 }
089 finally {
090 PortalSecurityManagerThreadLocal.setEnabled(enabled);
091 }
092
093 return bean;
094 }
095
096 public void setBeanFactory(BeanFactory beanFactory) throws BeansException {
097 _beanFactory = beanFactory;
098 }
099
100 private void _autoInject(
101 Object targetBean, String targetBeanName, Class<?> beanClass) {
102
103 if ((beanClass == null) || beanClass.isInterface()) {
104 return;
105 }
106
107 String className = beanClass.getName();
108
109 if (className.equals(_JAVA_LANG_OBJECT) ||
110 className.startsWith(_ORG_SPRINGFRAMEWORK)) {
111
112 return;
113 }
114
115 Field[] fields = beanClass.getDeclaredFields();
116
117 for (Field field : fields) {
118 BeanReference beanReference = field.getAnnotation(
119 BeanReference.class);
120
121 String referencedBeanName = null;
122 Class<?> referencedBeanType = null;
123
124 if (beanReference != null) {
125 referencedBeanName = beanReference.name();
126 referencedBeanType = beanReference.type();
127 }
128 else {
129 continue;
130 }
131
132 if (!Object.class.equals(referencedBeanType)) {
133 referencedBeanName = referencedBeanType.getName();
134 }
135
136 Object referencedBean = _beans.get(referencedBeanName);
137
138 if (referencedBean == null) {
139 try {
140 referencedBean = _beanFactory.getBean(referencedBeanName);
141 }
142 catch (NoSuchBeanDefinitionException nsbde) {
143 try {
144 referencedBean = PortalBeanLocatorUtil.locate(
145 referencedBeanName);
146 }
147 catch (BeanLocatorException ble) {
148 StringWriter stringWriter = new StringWriter();
149
150 PrintWriter printWriter = new PrintWriter(stringWriter);
151
152 printWriter.print("BeanFactory could not find bean: ");
153
154 nsbde.printStackTrace(printWriter);
155
156 printWriter.print(
157 " and PortalBeanLocator failed with: ");
158 printWriter.append(ble.getMessage());
159
160 printWriter.close();
161
162 throw new BeanLocatorException(
163 stringWriter.toString(), ble);
164 }
165 }
166
167 _beans.put(referencedBeanName, referencedBean);
168 }
169
170 ReflectionUtils.makeAccessible(field);
171
172 BeanReferenceRefreshUtil.registerRefreshPoint(
173 targetBean, field, referencedBeanName);
174
175 try {
176 field.set(targetBean, referencedBean);
177 }
178 catch (Throwable t) {
179 throw new BeanCreationException(
180 targetBeanName, "Could not inject BeanReference fields", t);
181 }
182 }
183
184 _autoInject(targetBean, targetBeanName, beanClass.getSuperclass());
185 }
186
187 private static final String _JAVA_LANG_OBJECT = "java.lang.Object";
188
189 private static final String _ORG_SPRINGFRAMEWORK = "org.springframework";
190
191 private static Log _log = LogFactoryUtil.getLog(
192 BeanReferenceAnnotationBeanPostProcessor.class);
193
194 private BeanFactory _beanFactory;
195 private Map<String, Object> _beans = new HashMap<String, Object>();
196
197 }